Sean Mahase, MD - Penn State Cancer Institute
Researcher Profile
Sean Mahase, MD
Assistant Professor, Department of Radiation Oncology
Scientific Program:Next-Generation Therapies
Clinical Trials
NRG-GU011: A Phase II Double-Blinded, Placebo-Controlled Trial of PROstate OligoMETastatic RadiotHErapy With or Without ANdrogen Deprivation Therapy in Oligometastatic Prostate Cancer (NRG Promethean)
Radiopaque Hydrogel Rectal Spacer for Prostate Cancer Radiation Image Guidance
NRG-BN012: A Randomized Phase III Trial of Pre-Operative Compared to Post-Operative Stereotactic Radiosurgery in Patients With Resectable Brain Metastases
NRG HN009- Randomized Phase II/III Trial of Radiation with High-Dose Cisplatin (100 mg/m2) Every Three Weeks Versus Radiation with Low-Dose Weekly Cisplatin (40 mg/m2) for Patients with Locoregionally Advanced Squamous Cell Carcinoma of the Head and Neck (SCCHN)
Recent Publications
2024
Miccio, JA, Tian, Z, Mahase, SS, Lin, C, Choi, S, Zacharia, B, Sheehan, JP, Brown, PD, Trifiletti, DM, Palmer, JD, Wang, M & Zaorsky, N 2024, 'Estimating the risk of brain metastasis for patients newly diagnosed with cancer', Communications Medicine, vol. 4, no. 1, 27. https://doi.org/10.1038/s43856-024-00445-7
Miccio, JA, Potter, NJ, Showkat, A, Yao, M, Mahase, S, Ferenci, M, Sisley, K, Dailey, A, Knipple, J, Blakely, A, Tuanquin, L & Machtay, M 2024, 'Single institution experience of MRI-guided radiotherapy for thoracic tumors and clinical characteristics impacting treatment duty cycle', Frontiers in Oncology, vol. 14, 1401703. https://doi.org/10.3389/fonc.2024.1401703
2023
Mahase, SS 2023, 'Can't Touch This, But Can We Treat That? Ethical Considerations', International Journal of Radiation Oncology Biology Physics, vol. 116, no. 5, pp. 976. https://doi.org/10.1016/j.ijrobp.2023.03.053
Mahase, SS, Roytman, M, Roth O'Brien, D, Ivanidze, J, Schwartz, TH, Pannullo, SC, Ramakrishna, R, Magge, RS, Williams, N, Fine, HA, Chiang, GCY & Knisely, JPS 2023, 'Concurrent immunotherapy and re-irradiation utilizing stereotactic body radiotherapy for recurrent high-grade gliomas', Cancer Reports, vol. 6, no. 7, e1788. https://doi.org/10.1002/cnr2.1788
Rodriguez, J, Martinez, G, Mahase, S, Roytman, M, Haghdel, A, Kim, S, Madera, G, Magge, R, Pan, P, Ramakrishna, R, Schwartz, TH, Pannullo, SC, Osborne, JR, Lin, E, Knisely, JPS, Sanelli, PC & Ivanidze, J 2023, 'Cost-Effectiveness Analysis of 68Ga-DOTATATE PET/MRI in Radiotherapy Planning in Patients with Intermediate-Risk Meningioma', American Journal of Neuroradiology, vol. 44, no. 7, pp. 783-791. https://doi.org/10.3174/ajnr.A7901
Choi, KY, Patel, SD, Lane, C, Tucker, J, Chan, K, Pradhan, S, Mahase, SS, Tam, SH & King, TS 2024, 'Elucidating survival and functional outcomes in patients with primary head and neck malignancies treated in academic versus community settings', Head and Neck, vol. 46, no. 2, pp. 398-407. https://doi.org/10.1002/hed.27588
Lorenz, FJ, Mahase, SS, Miccio, J, King, TS, Pradhan, S & Goyal, N 2023, 'Update on adherence to guidelines for time to initiation of postoperative radiation for head and neck squamous cell carcinoma', Head and Neck, vol. 45, no. 7, pp. 1676-1691. https://doi.org/10.1002/hed.27380
2022
Mahase, S & Nagar, H 2022, 'Corrigendum re “Hypofractionated Postoperative Radiotherapy for Prostate Cancer: Is the Field Ready Yet?” [Eur Urol Open Sci 2020;22:9–16](S2666168320358328)(10.1016/j.euros.2020.10.001)', European Urology Open Science, vol. 44, pp. 52-53. https://doi.org/10.1016/j.euros.2022.08.012
Mahase, SS, Singh, B, Wong, RJ, Ganly, I, Boyle, JO, Patel, SG & Lee, NY 2022, 'Primary chondrosarcomas of the larynx treated with proton radiotherapy: A single institutional experience', Cancer Reports, vol. 5, no. 9, e1621. https://doi.org/10.1002/cnr2.1621
2021
Ramirez-Fort, MK, Meier-Schiesser, B, Lachance, K, Mahase, SS, Church, CD, Niaz, MJ, Liu, H, Navarro, V, Nikolopoulou, A, Kazakov, DV, Contassot, E, Nguyen, DP, Sach, J, Hadravsky, L, Sheng, Y, Tagawa, ST, Wu, X, Lange, CS, French, LE, Nghiem, PT & Bander, NH 2021, 'Folate hydrolase-1 (FOLH1) is a novel target for antibody-based brachytherapy in Merkel cell carcinoma', Skin Health and Disease, vol. 1, no. 1, e9. https://doi.org/10.1002/ski2.9
Farjam, R, Mahase, SS, Chen, SL, Coonce, M, Pennell, RT, Fecteau, R, Chughtai, B, Dewyngaert, JK, Kang, J, Ch Formenti, S & Nagar, H 2021, 'Quantifying the impact of SpaceOAR hydrogel on inter-fractional rectal and bladder dose during 0.35 T MR-guided prostate adaptive radiotherapy', Journal of applied clinical medical physics, vol. 22, no. 9, pp. 49-58. https://doi.org/10.1002/acm2.13344
O'Brien, DAR, Kaye, SM, Poppas, PJ, Mahase, SS, An, A, Christos, PJ, Liechty, B, Pisapia, D, Ramakrishna, R, Wernicke, AG, Knisely, JPS, Pannullo, SC & Schwartz, TH 2021, 'Time to administration of stereotactic radiosurgery to the cavity after surgery for brain metastases: a real-world analysis', Journal of neurosurgery, vol. 135, no. 6, pp. 1695-1705. https://doi.org/10.3171/2020.10.JNS201934
Roth O'Brien, DA, Poppas, P, Kaye, SM, Mahase, SS, An, A, Christos, PJ, Liechty, B, Pisapia, D, Ramakrishna, R, Wernicke, AG, Knisely, JPS, Pannullo, S & Schwartz, TH 2021, 'Timing of Adjuvant Fractionated Stereotactic Radiosurgery Affects Local Control of Resected Brain Metastases', Practical Radiation Oncology, vol. 11, no. 3, pp. e267-e275. https://doi.org/10.1016/j.prro.2021.01.011
Mahase, SS, Roth O'Brien, DA, No, D, Roytman, M, Skafida, ME, Lin, E, Karakatsanis, NA, Osborne, JR, Brandmaier, A, Pannullo, SC, Ramakrishna, R, Stieg, PE, Knisely, JPS & Ivanidze, J 2021, '[68Ga]-DOTATATE PET/MRI as an adjunct imaging modality for radiation treatment planning of meningiomas', Neuro-Oncology Advances, vol. 3, no. 1, vdab012. https://doi.org/10.1093/noajnl/vdab012
2020
Mahase, SS, D'Angelo, D, Kang, J, Hu, JC, Barbieri, CE & Nagar, H 2020, 'Erratum: Trends in the Use of Stereotactic Body Radiotherapy for Treatment of Prostate Cancer in the United States', JAMA network open, vol. 3, no. 2, e1920471. https://doi.org/10.1001/jamanetworkopen.2019.20471
Mahase, S & Nagar, H 2020, 'Hypofractionated Postoperative Radiotherapy for Prostate Cancer: Is the Field Ready Yet?', European Urology Open Science, vol. 22, pp. 9-16. https://doi.org/10.1016/j.euros.2020.10.001
Wernicke, AG, Mahase, SS & Schwartz, TH 2020, Intraoperative Brachytherapy for Resected Brain Metastases. in Central Nervous System Metastases: Diagnosis and Treatment. Springer International Publishing, pp. 441-456. https://doi.org/10.1007/978-3-030-42958-4_31
Rogers, MJ, Ramirez-Fort, MK, Kashanian, JA, Broster, SA, Matta, J, Mahase, SS, Fort, DV, Niaz, MJ, McClelland, S, Bander, NH, Fort, M, Lange, CS, Schlegel, P & Mulhall, JP 2020, 'Prostatic irradiation-induced sexual dysfunction: A review and multidisciplinary guide to management in the radical radiotherapy era (Part II on Urological Management)', Reports of Practical Oncology and Radiotherapy, vol. 25, no. 4, pp. 619-624. https://doi.org/10.1016/j.rpor.2020.03.011
O'Brien, DAR, Chidambaram, S, Mahase, SS, Ivanidze, J & Pannullo, SC 2020, Radiotherapy for aggressive meningiomas and recurrent low grade tumors. in Meningiomas: Comprehensive Strategies for Management. Springer International Publishing, pp. 175-200. https://doi.org/10.1007/978-3-030-59558-6_12